A Sign in the Sky
A Devotional from Genesis 9-10
Notice something remarkable: after global judgment, God did not withdraw or become distant. Instead, He established a covenant, signified by a rainbow in the sky. Its colors, arch, and appearance are not of human origin later shaped by culture, but rather God’s sign in the heavens. Within this sign, the Lord declared a promise that transcends time — a covenant proclaimed in a language every generation can understand: “Never again will I flood the earth. ”Humanity may forget, distort, or attempt to reinterpret it, but the Word of the Lord does not change.
Along with the rainbow — God’s visible sign — He has also placed an invisible witness within the human heart. Across cultures and throughout history, people have carried a basic awareness that God exists and that right and wrong truly matter (Romans 2:14–15). Creation itself points to God as Creator. The beauty, order, and vastness of the world testify to Him. “The heavens declare the glory of God” (Psalm 19:1). Romans 1:20 explains that God’s invisible qualities — His eternal power and divine nature — are clearly seen in what He has made.
Through creation, God reveals that He exists. Yet creation alone cannot fully disclose His redemptive plan. Humanity needs something more specific — God’s Word. From cover to cover, the Bible reveals God not only as Creator, but as Savior (2 Timothy 3:15). Scripture speaks clearly about His character, His purposes, and His plan to redeem humanity through Jesus Christ (John 20:31). Therefore, there is not merely a God over creation, but a God who is “not far from each one of us” (Acts 17:27).
Even our moral instincts reflect this inner witness. As C.S. Lewis argued in Mere Christianity, when we call something unjust, we acknowledge that justice must truly exist. After all, we cannot recognize a crooked line without some idea of what a straight line looks like. Scripture affirms this reality: God has written His law on the human heart (Romans 2:15). Our sense of right and wrong points beyond personal preference to a moral standard we did not invent — a standard within us that ultimately points back to God (Ecclesiastes 3:11).
Genesis 10 records humanity multiplying and spreading across the earth. Though we are thousands of years removed from those events, one truth remains unchanged: God is faithful to His promise. Because He is faithful, we can trust His Word — even in a world that is often unfaithful and quick to break its own promises.
The rainbow remains a quiet reminder of God’s promise, while His Word provides the fuller revelation of who He is and why He came — to redeem all who call upon Him.